Numerical analysis of oscillating flow about a circular cylinder
Authors
Lotshaw, John E.
Subjects
Numerical calculations
Wake
Cylinder
Oscillating Flow
Wave and current
Co-existing flow
Harmonically oscillating flow
Wake
Cylinder
Oscillating Flow
Wave and current
Co-existing flow
Harmonically oscillating flow
Advisors
Sarpkaya, T.
Date of Issue
1992-06
Date
June 1992
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
The numerical experiments, carried out through the use of the vorticity stream function equations and their finite difference form, on sinusoidally oscillating as well as co-existing flows (sinusoidal oscillation plus steady mean flow) at low and intermediate Keulegan-Carpenter numbers are described. A third-order in time, second-order in space, three-level predictor-corrector finite difference scheme has been used. The Poisson equation for the stream function was solved by a Fast Poisson Solver based on the High Order Difference Approximation with Identity Expansion (HODIE) and the Fast Fourier Transform (FFT) methods provided by the National Center for Atmospheric Research for the solution of separable elliptic partial differential equations with a non-square grid. The analysis has produced force-transfer and fluid-damping coefficients comparable to those obtained experimentally for both types of flows (i.e., with and without current) and to those obtained with a square grid through the use of the IMSL library.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
66 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.